<!DOCTYPE html>
<html class=reftest-wait>
<head>
  <title>View transitions: iframe transition from scrollbar</title>
  <link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
  <link rel="author" href="mailto:bokan@chromium.org">
  <link rel="match" href="iframe-old-has-scrollbar-ref.html">
  <meta name=fuzzy content="maxDifference=0-80; totalPixels=0-500">
  <script src="/common/reftest-wait.js"></script>
  <style>
    iframe {
      width: 50vw;
      height: 50vh;
    }
  </style>
  <script>
    failIfNot(document.startViewTransition, "Missing document.startViewTransition");

    onload = () => {
      requestAnimationFrame(()=>{requestAnimationFrame(()=> {
        frames[0].window.startTransition();
        frames[0].window.transition.ready.then(() => {
          requestAnimationFrame(()=>{requestAnimationFrame(()=> {
            // Expect that the scrollbar should disappear immediately since it
            // isn't part of the snapshot.
            takeScreenshot();
          })});
        });
      })});
    }
  </script>
</head>

<body>
  <iframe src="support/iframe-scrollbar-child.html?scrollbar">
  </iframe>
</body>
</html>
